A. P. Balachandran

A. P. Balachandran
Balachandran in 2008
Born(1938-01-25)25 January 1938
Salem, Madras Province, British India (now Tamil Nadu, India)
Died18 April 2025(2025-04-18) (aged 87)
Coimbatore, Tamil Nadu, India
CitizenshipIndian
Alma materUniversity of Madras (Ph.D)
Known forTopological methods in quantum physics,
Works on noncommutative geometry
Scientific career
InstitutionsSyracuse University
ThesisSome topics in the strong and weak interactions of elementary particles (1962)
Doctoral advisorAlladi Ramakrishnan
Doctoral studentsPierre Ramond

Aiyalam Parameswaran Balachandran (25 January 1938 – 18 April 2025) was an Indian theoretical physicist known for his extensive contributions to the role of classical topology in quantum physics. He was an emeritus professor in the Department of Physics, Syracuse University, where he was previously the Joel Dorman Steele Professor of Physics between 1999 and 2012. He was also a fellow of the American Physical Society since 1988 and was awarded a prize by the U.S. Chapter of the Indian Physics Association in recognition of his outstanding scientific contributions.

In 1990, Syracuse University honoured him with a Chancellor's Citation for Exceptional Academic Achievement.